What causes a supernova?(1 point)
Responses
force of a nebula
force of a nebula
energy of a nebula
energy of a nebula
force of gravity
force of gravity
energy of heat
force of gravity
How are nebulae and stars related? Select the three correct answers.(2 points)
Responses
Stars form from nebulae.
Stars form from nebulae.
Stars are pulled toward nebulae.
Stars are pulled toward nebulae.
Nebulae explode to form stars.
Nebulae explode to form stars.
Nebulae are found inside stars.
Nebulae are found inside stars.
Nebulae form from stars.
Nebulae form from stars.
Stars explode to form nebulae.
Stars form from nebulae.
i need 3 correct answers
1. Stars form from nebulae.
2. Nebulae explode to form stars.
3. Nebulae form from stars.
How can a planetary nebula be identified? Select the two correct answers.(1 point)
Responses
dark area
dark area
central star remnant
central star remnant
diffuse edges
diffuse edges
spherical shape
central star remnant
spherical shape
What does it mean to characterize a nebula as diffuse?(1 point)
Responses
Its edges have clear boundaries.
Its edges have clear boundaries.
Its edges do not have clear boundaries.
Its edges do not have clear boundaries.
It reflects only non-visible radiation.
It reflects only non-visible radiation.
It reflects only visible radiation.